It's there because we had bad experiences with newbie authors last year where the games they wrote were definitely not suitable for beginners and we were crticised for that. Beginner-friendly games is the whole point of this competition.
We do not discourage newbie authors, but we try to explain what they're getting themselves in for and to get a mentor. In your case, point 'n' click, choose your own adventure (CYOA) and narrative works are not appropriate background experience for this competition, as it's all about parser-based text adventures suitable for beginners to the genre.
Writing a text adventure is hard. Writing a text adventure suitable for beginners is very hard. Writing an in-game tutorial is very, very hard. Even very experienced authors have difficulty with this, which is why very few text adventures have an in-game tutorial. If you think you have the skillset to write such a game, you are more than welcome to enter the competition.